Abstract: A concrete vibrator powered by a portable drill includes a housing having a contacting pad at one end and an axial bore. A camshaft is received within the bore. A transverse retainer is secured on the camshaft for retaining the camshaft within the bore. The camshaft includes a pair of cam surfaces at one end. A cam follower is disposed within the bore for engaging the cam surfaces when the camshaft is rotated. The cam follower and cam surfaces cooperatively cause axial reciprocation of the rotating camshaft for producing axial vibration of the housing face. The axial bore includes a radially expanded portion to receive the retainer and prevent complete withdrawal of the camshaft. The camshaft includes a transverse bore for receiving the retainer within the radially expanded portion. The retainer has a spring bearing against a trapped ball projecting beyond the cylindrical surface of the camshaft.

Abstract: Apparatus for removing meat from the drumsticks of poultry, such as turkeys and chickens, utilizes aligned, tandem cylinders, the first of which urges the second along a guided path, the second carrying a centering cone pusher thereon for receiving the meat end of the drumstick axially thereinto. Transversely moving gates engage the drumstick about the hock knuckle end and the centering cone, upon moving forward under the force exerted by the first cylinder against the second cylinder, pushes the hock knuckle end through and past the closed gates. This places extreme tension on the tendons between the gates and where they are attached to the hock knuckle, causing the tendons to break while the meat is formed into a gatered mass in and adjacent the centering cone. The gates are withdrawn and the second cylinder is activated, causing a rod to project axially through the meat mass and against the meat end of the bone, urging the bone through a guide passageway and normally expelling it from the apparatus.